稻种资源耐冷性鉴定与评价指标分析

Analysis and Evaluation on Cold Tolerance for Rice Germplasm Resources

分析比较了当前在稻类耐冷特性鉴定评价中普遍应用的鉴定方法与评价指标。稻种资源耐冷性鉴定中存在数量多、规模大、且材料来源于不同生态区的各种变异类型的特点 ,应本着具体情况与研究目的选择适宜的性状指标进行评价。

Main evaluating characteristics and identifying methods on cold tolerance for rice varieties were summarized and compared with each other in this paper. Though any single method was surely useful to evaluate cold tolerance at special stage, but not exact enough to identify at the same time due to the variation of materials collected from different regions.Identification and evaluation both at lab during bud or seedling stage and in high natural altitude sites at heading stage could be regarded as one of effective approaches in Guizhou.